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Medium-voltage cables
- Onshore underground single-core cables (typically 33 kV) connect the rows of wind turbines and, in parallel, links them to an onshore substation
- Offshore cost-efficientsubmarine 3-core copper cables with integrated fiber optic elements and customized armor designs to link the turbines.
High-voltage cables for transmission
- Onshore AC transmission: cables ranging from 60 kV to 500 kV, XLPE insulated, are used for power transmission from the onshore windpark substation to the central grid.
- Offshore AC transmission: submarine cables ranging from 60 kV to 500 kV with various designs available: 3-core XLPE cables (60-225 kV); single core XLPE up to 400 kV.
- Onshore and offshore DC transmission up to 500 kV applicable for high transmission requirements and long distances: mass-impregnated cables with an Integrated Return Conductor, and Polymer-based insulated DC cables.
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